Compress PST Box





SysTools PST Compress
Tool to Compact Outlook PST Data File of Large Size Effectively

(Average Rating 4.6 Based on 79 Reviews)

Quickly Compress Outlook PST files with SysTools Compact PST Tool for MS Outlook 2021, 2019, 2016, 2013, 2010, 2007 & all the below versions.

  • Compress large PST file size by Removing, Extracting & Saving Outlook attachments
  • Option to Compact Outlook PST files size in batch via Utility
  • Provide Search Option to Search PST Files from All Drive
  • Save the Attachment to a Specific Folder after Extraction and Compression
  • Exclude or Include any folder during the PST File Compression process
  • Facility to Skip or Remove Duplicate Items from the PST files
  • Option to Compress / Remove / Save Attachment according to Date Range
  • Software Generates a Log Report to show complete PST compaction details
  • Standard user can easily install and run the tool without Admin Privilege
  • Compact PST Files tool compress of both ANSI & UNICODE PST file types
  • Compress PST file size to minimum possible size With No Data Loss
  • Compatible with all the versions of MS Outlook and Windows

Free Live Demo: – SysTools PST Compress Tool Fully Secured Download Version

Note: - SysTools PST Compress tool completely removes and save attachments from Outlook PST file to local drive. So that, the size of the PST file is decreased. But if you only want to extract multiple attachments from Outlook PST and want your attachment intact with your data file then try SysTools Outlook Attachment Extractor tool.

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List of Key Features in SysTools PST Compress Tool

Software to Compact Outlook PST file, Remove, Extract and Save PST file Attachments

Compres pst file

Compress Large PST File

An ANSI Data file that is about to reach 2 GB is a big concern as this leads to corruption. With this PST compression Tool, you can compact PST files and decrease the size so as to make it easily manageable. PST compact software tool comes with option to remove attachments from Outlook PST file as well as an option to compress attachment and save it as per the requirement.

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Compress Selective Folder

The comes with the view pane where you can see the added file and for that pane, you can easily select and deselect the folders. Using this option you can compress the PST file as per your need. Along with this, the tool also comes with the option to exclude deleted items and exclude junk folder.

Compres pst file

Options to Add PST Files

The PST Compress tool is capable to compress multiple PST and for this, the tool provides users with three options such as:

  • Add Files -If you opt for this option then you can able to add the “n” number of individual PST files for the compression process.
  • Add Folder -Just like its name this option gives you the facility to add the whole folder into the software. Using this option you can easily add multiple folders too.
  • Search Files -This option gives you the freedom to search the PST file. Using this option you can search the PST in your local drive and easily add to software for the compressing process.

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Facilitate Attachment Filters

The Outlook PST Compress Software tool comes with two amazing features that help users in any way.

  • File Size -This option provides the facility to define the size of the attachment during the PST compression process. You can opt for the “UpTo” or “More Than” option and you can go to the range of 1 KB to 100 MB.
  • File Type -This is a very interesting feature provided by this tool. Now, using this option one can remove, save and compress the attachment on the basis of file extensions. Just enter the extension of the file and the software will do its work.

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Remove Outlook PST Attachments

In order to compact Outlook PST file and compress it, the PST compress software comes with an option to remove attachments from Outlook PST file. If you choose this option, the software will remove attachment permanently. This will compress PST files size and remove the unnecessary attachments from PST file.

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Compress Attachment

We all know the attachment tasks a lot of space in the PST file. So in order to compress the PST file, the tool comes with the option to compress the PST file. Now, if you choose this option then the tool will compress or create a ZIP file of all the attachments saved in that PST file.

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Remove, Save & Compress Attachments

Using this option you can remove and save the attachments. Besides this, you can also compress PST file attachments to minimize the size of attachments as well. The PST Compact tool will zip all the attachments that are found within a PST file.

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Remove & Save Attachments

With the help of this option, you can compact large PST file without deleting its attachments. The PST File Compression Tool will remove all attachments found in a data file and save them into a separate folder. You can find the PST file size decreased to a large extent with all attachments saved in a separate folder via PST Compress Tool.

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Attachment Categories

This Compact PST tool provides the option to select the filter for attachments, the tool comes with the categories of Mail, Calendar, Tasks, Contacts, and Journals. Now, users can choose the categories for which they want to remove the attachments in order to compress the PST file.

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Date Filters Option

Outlook Attachment Remover has developed after so much research and due to that, it provides all the features that users need, like a Date Filter. Using this option users can easily select the specific data rage to remove or compress the attachment to compress the PST file.

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Skip Duplicate Data

The tool also comes with the option to remove the duplicate while the PST compression. Now, once you opt for this option, then all the duplicate items that existed in the older PST file get removed after the completion of the task.

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Show Progress Report

Once you start with the PST file compression process, the PST File Compaction Utility will generate a complete export report to compact PST files, together with the current progress status. This report includes details like PST file name, folder name, attachment count, success count, and so on.

Compact PST Files Software - Features & Specifications

Software and Hardware Requirements of PST Compress tool to Compress Outlook Data files

best pst compress software
Name:    SysTools PST Compress
Version:    5.0
Size:    31 MB
New Release:    September, 2023
UI Languages:    English
MD5:    6bdcd0b94b78bf3b1b68cb1ac23a1aa2
Free Version:

    Download Now

System Specifications

Hard Disk Space
100 MB of free hard disk space


Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz


Microsoft .NET framework 4.5 or above should be installed.


Supported Editions

  • Microsoft Windows – 7 / 8 / 8.1 / 10 (32-bit & 64-bit), 11 (64-bit) & Windows Server 2008 / 2012 / 2016 / 2019 / 2022
  • MS Outlook – Outlook 2000, 2003, 2007, 2010, 2013, 2016, 2019, 2021 (32 bit & 64 bit)


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Electronic Delivery

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Software Customization

If you need to customize PST Compress Tool or need additional features then, Request Quote


Get an Overview of PST Compact Tool Features - DEMO & Licensed Version

Features DEMO Version FULL Version
Add PST File & Folder
Remove Selected PST Files
Support All Outlook Versions 2021 and Below
Windows 11, 10, 8 & All Other Previous Windows Version Supported
Three Compression Options
Batch item compression First 15 Items / PST File
Compress data Files 15 Items / Folder
Cost FREE $49

Frequently Asked Question

How to Compress PST files step by step using this tool?

Compress PST Tool

To Compact Outlook 2021, 2019, 2016, 2013, 2010, 2007, 2003, 2002 data file, follow the below mentioned steps:

  • Step 1 –: Install the PST compaction tool & then go to Start menu >> Programs >> SysTools PST Compact Tool
  • Step 2 –: Now, select Add file >> Select & Open
  • Step 3 –: Select the folder to compact PST files & then click on Compress PST >> Browse file >> OK >> Compress PST
  • Step 4 –: Select an appropriate option among the four options: Remove Attachments, Compress Attachments, Extract & Save Attachments, Extract ,Save Compress Attachments & then click on Compress
  • Step 5 –: The software will show the status as "Compress Successfully".

Yes, PST Compact Software is able to downsize multiple PST files.

With growth in data file size, Outlook becomes slower and after a maximum permissible limit, increase in file size causes PST to be corrupted. Compress PST Files software is the best solution to overcome this problem. It removes / compresses / saves attachments in order to downsize PST file and improve Outlook performance.
Yes, Compact PST files software works smoothly with Windows 10, 8 and all its below versions of the OS.
It depends upon the size of your Data file. But usually, PST File Compact tool make the file size small in size in a very short time span.
No, Outlook installation is necessary to run this Compress PST Files tool. It should be installed and configured properly on machine. You can install any version of Outlook (32 bit).
Yes, you can add and process multiple PST files to the PST compact tool at a time and in a very short duration it will show you precise results.
Software does not decrease the size of PST file directly. It has Four options to decreased the PST file. You can choose accordingly
  • Remove Attachments
  • Compress Attachments
  • Extract & Save Attachments
  • Extract, Save & Compress Attachments
No, software can decrease Outlook PST file of any size without showing any performance issues. It can compact both ANSI & UNICODE type PST files.
No, Compress PST software only reads the original PST file & it does not produce any type of changes in this source PST file.
No, PST Compact tool is built with the best set of algorithms & latest technology so there is no chance of data loss involved with the usage of this tool. With the absence of malware, spyware, or adware along with no performance risks involved, it is completely safe & secure to use this tool.


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